(A) 12 sec
(B) 24 sec
(C) 48 sec
(D) 60 sec
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(A) 12 sec
(B) 24 sec
(C) 48 sec
(D) 60 sec
Answer: Option (B) 24 sec
Explanation:
Relative speed = = (45 + 30) km/hr
= 75 x 5 /18 m/sec
= 125/6 m/sec.
We have to find the time taken by the slower train to pass the DRIVER of the faster train and not the complete train.
So, distance covered = Length of the slower train.
Therefore, Distance covered = 500 m.
Therefore Required time = 500 x (6/125) = 24 sec.